Is that flirting or am I just being paranoid?

Lately I’ve been trying to focus on myself by going to the gym consistently so often on my walks to and from there and the supermarket I get some looks from girls and sometimes I see her touching or messing with her hair while looking at me. Idk if that’s positive or negative but if that’s positive then what is the next move???? (I lowkey wanna remain in single FC).

Btw I’m a little bit on the overweight side and there hasn’t been much difference in the scale